request和refuse具体解题时有什么区别呢

request
v.tr.（及物动词）
re.quest.ed,re.quest.ing,re.quests
To express a desire for; ask for.
恳求：表达对…的欲望；请求
To ask (a person) to do something.
要求：要求（某人）做某事
n.（名词）
The act of asking.
要求的行为
Something asked for.
被要求的事物

by request
In response to an expressed desire:
应…的要求：
We are offering these scarves for sale again by request.
应大众要求我们再次出售这些头巾
in request
In great demand:
受欢迎：
a pianist in great request.
极受欢迎的钢琴家
on request 或
upon request
When asked for:
一经要求：
References are available on request.
有参考资料备索

From Middle English requeste [the act of requesting]
源自 中古英语 requeste [要求的行为]
from Old French
源自 古法语
from Vulgar Latin *(r¶ºta} [(thing) requested]
源自 俗拉丁语 *(r¶ºta} [要求的（东西）]
from Latin [feminine past participle of] requºrere [to ask for] * see require
源自 拉丁语 [] requºrere的阴性过去分词 [要求] *参见 require

request“er
n.（名词）

request
/ri'kwest; ri'kwest/

---------- 1 ----------
~
(for sth/that...) (a) act of asking for sth in speech or writing, esp politely （口头或书面的）要求; （尤指）请求:
* make repeated requests for help 一再请求帮助
* your request that I should destroy the letter 你要求我销毁那封信一事.
(b) thing asked for in this way 要求或请求的事物:
* Your requests will be granted. 你的请求能够获准.
* [attrib 作定语] a request programme, show, etc, ie in which music is played that has been requested by listeners 点播的节目、 演出等.
---------- 2 ----------
(idm 习语) at sb's request/at the request of sb because of sb's wish 应某人之请求; 鉴於某人之请求:
* I came at your (special) request. 我是（特别）应你要求而来的. by request (of sb) in response to a request
(from sb) 应（某人的）请求; 经（某人之）要求:
* By popular request, the chairman was re-elected. 徇众要求, 主席获重选连任. on re`quest when asked for 一经要求:
* Catalogues are available on request. 备有目录供索取.
派生： request v [Tn, Tn.pr, Tf, Dn.t] ~ sth
(from/of sb)
(fml 文) ask sb, esp politely, in speech or writing to do sth （以口头或书面形式）要求, （尤指）请求某人做某事: request compliance with the rules, eg on a notice 请遵守规则（如告示用语）
* All I requested of you was that you came early. 我只要求你早点来.
* I requested him to help. 我请求他帮忙.
* You are (kindly) requested not to smoke. 请不要吸烟. =>Usage at ask 用法见ask.
复合： re`quest stop (Brit) place where buses will only stop if a passenger signals （公共汽车的）招手即停车站.
及物动词，意思是"需求，要求"。如：
　　This job requires a clear head .

　　1) require 后的宾语从句用 should 型虚拟语气。
　　The boss required that she (should) keep it a secret . 老板要求她对此事保密。
　　He required the work not be done in a haste .

　　2) sth + require + doing = sth + require + to be done 某物需要……
　　These temples require / want / need repairing next month . = These temples require / want / 　　need to be repaired next month. 这些庙宇下个月需要修缮。


所以本题选择C：require watering= require to be watered室内植物需要定期浇水。